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【2020,踏上5G高速路】技术决定未来,走近华为麒麟9905G
2020-01-07 13:52  www.katninews.com

5G时代在2020年终于呼啸而至,从2019年下半年开始,市场已经涌动起5G技术普及的热潮,消费者也迎来了越多越多相关产品,这其中包括了5G通讯环境的布设、5G相关应用以及大家更为熟悉的5GSoc和5G手机的上市等。从目前情况来看,已经推出相关移动芯片的主要厂商包括华为、高通、三星和联发科,推出相关手机、移动设备的厂商就更多了。本文,我们先来看看国货之光——华为麒麟9905G。

The 5G era finally roared in 2020, and since the second half of 2019, the market has surged into a 5G technology boom, and consumers have seen more and more related products, including the placement of 5G communications environments,5G related applications, and the listing of the more familiar 5Gsoc and 5G phones. For now, the main players that have launched the devices include Huawei, qualcomm, samsung and unifax, and even more are those who have launched the devices. In this article, we first look at the light of domestic goods Huawei Kirin 9905G.

作为全球移动芯片研发实力很强的厂商之一,华为在2019年9月的发布会上带来了集成5G基带的5GSoC—麒麟9905G。在发布后没多久,它就搭配全新Mate30Pro5G版本手机一起销售了。不仅如此,麒麟9905G还是全球首个支持SA/NSA双模的移动芯片,因此市场关注度颇高。

As one of the world's most powerful mobile-chip makers,Huawei brought the 5g soc-kylin 9905g with an integrated 5g base at its september 2019 launch. Shortly after its release, it was sold with a new version of the Mate 30 Pro 5G. Not only that, Kirin 9905G is the world's first mobile chip to support SA\/NSA dual-mode, so the market is highly focused.

麒麟9905G是全球首个采用了集成方式布置基带和AP单元的移动芯片,同时也是全球首个集成5G基带的移动芯片。在产品实现上,麒麟9905G的基带和处理器部分集成在一颗芯片上,采用台积电7nm工艺制造。这样的做法在技术实现上具有一定风险,主要是基带模块会使用一部分模拟电路,而处理器部分则大量采用数字电路,在制造上模拟电路和数字电路需要不同的工艺和处理,这在成熟的制程工艺上处理比较容易,但是对于7nm并且采用了EUV技术制造的麒麟9905G而言,需要冒一定风险。好在从实际产品来看,华为和制造商在这一部分的配合不错,很好地避开了新工艺早期的“雷区”,取得了很高的晶体密度。

Kirin 9905G is the world's first mobile chip with integrated baseband and AP units, and the world's first to integrate 5G basebands. On the product implementation, the baseband and processor parts of Kirin 9905G are integrated on one chip and manufactured using TSMC 7nm process. This approach carries some technical risk, mainly that the baseband module will use some analog circuits, while the processor part will use a large number of digital circuits, which require different processes and processes in manufacturing, which is easier to handle in a mature process, but for Kirin 9905G, which is 7nm and has been manufactured using EUV technology. Fortunately, in real terms, the Huawei and the manufacturer fit well in this section, avoiding the \"minefield\" of the early stages of the new process and achieving a high crystal density.

目前5G基带的复杂程度同时带来了芯片面积的增大。即使是采用最新并使用了部分EUV工艺的7nm制程,麒麟9905G的整体芯片面积依旧超过了100mm2。不过,集成式所需要的PCB面积还是小于分离式外挂基带,并且在热量控制和功耗方面也有一定优势。

At present, the complexity of 5G baseband brings about the increase of chip area at the same time. Even with a 7nm process using the latest and some of the EUV processes, Kirin 9905G has a total chip area of more than 100mm2. However, the integrated PCB area is still less than the separated external baseband, and has some advantages in heat control and power consumption.

根据相关透视图显示,麒麟9905G虽然采用集成基带设计,但是基带有可能依旧采用了两部分,其中4G和以下制式的基带位于芯片下部中央,5G基带则被放置在芯片的右下侧,和4G基带部分存在明显的分隔。目前这种说法尚未得到华为官方确认,但是也从一个侧面反映出5G基带设计之难。

According to the relevant perspective, although Kirin 9905G is an integrated baseband design, it is possible that two parts of the baseband are still used, with 4G and below in the center of the lower part of the chip,5G in the lower right side of the chip, and 4G in the base band. The claim has yet to be officially confirmed by Huawei, but it also reflects the difficulty of 5G baseband design on one side.

作为一款集成基带的产品,麒麟9905G很难做到“大包全”,考虑到芯片规格和实际使用,华为也在基带所支持的规格上有所取舍。比如麒麟9905G的基带在5G方面只支持厘米波,也就是Sub-6GHz规格,不支持毫米波模式,因此其最高下载速度为,上传速度为。在5G网络的模式方面,麒麟9905G也是首个支持双模SA/NSA(独立组网/非独立组网)的5GSoC。

As an integrated baseband product, kylin 9905g is difficult to achieve \"big package complete \", considering the chip specifications and practical use,Huawei also in the baseband support of the specifications have a trade-off. For example, the base band of Kirin 9905G only supports centimeter wave in 5G, that is, Sub-6GHz specification, and does not support millimeter wave mode, so its maximum download speed is, upload speed is. In terms of the mode of 5G network, Kirin 9905G is also the first 5G SOC to support dual-mode SA\/NSA (independent networking\/independent networking).

除了基带部分引发了关注外,麒麟9905G在其他地方的设计也颇为引人注目。在CPU架构方面,华为选择的是经过自己优化改进后的Cortex-A76搭配Cortex-A55,架构采用的是华为之前在麒麟980上就已经使用过的“2 2 4”模式,也就是将处理器核心分为三组,其中两个基于Cortex-A76架构的高性能核心运行频率可达,剩余两个基于Cortex-A76架构的中等性能、高效率核心的运行频率为,4个基于Cortex-A55设计的节能小核心运行最高为。GPU方面,华为选择了ARM的Mali-G76MP16,运行频率为750MHz,这也是有史以来华为采用的规模最大、性能最强的GPU模组。

In addition to the interest in the baseband section, kylin 9905g's designs are striking elsewhere. In terms of CPU architecture,Huawei chooses Cortex-A76 with Cortex-A55 after its own optimization and improvement. The architecture uses the \"22 4\" mode that Huawei has already used on Kirin 980, that is, the processor core is divided into three groups, two of which are based on Cortex-A76 architecture with high performance core running frequency, the remaining two based on Cortex-A76 architecture with medium performance and high efficiency core running frequency, and four based on Cortex-A555 design with energy saving core is the highest. On the GPU side,Huawei chose ARM's Mali-G76MP16 with a running frequency of 750 MHz, which is also the largest and most powerful GPU module ever used by Huawei.

除了CPU和GPU外,麒麟9905G的最大技术亮点在于其AI计算能力得到了大幅度加强。麒麟9905G在NPU也就是神经处理单元上采用了自研的全新达芬奇架构,华为宣称其整体性能相比业界其他类似核心高出6倍以上,除了NPU大核心外,华为还在内部设计了一个NPU微核,用于那些对性能要求不高但需要AI加速的场合,以提高整个处理器的能耗比。

In addition to CPU and GPU, Kirin 9905G's biggest technical highlight is that its AI computing power has been greatly enhanced. Kirin 9905G has adopted a new Leonardo da Vinci architecture on the NPU, the neural processing unit, and Huawei claims that its overall performance is more than six times higher than that of other similar cores in the industry. In addition to its large NPU core,Huawei has internally designed an NPU microcore for applications that require less performance but require AI acceleration to increase the energy consumption ratio of the entire processor.

为了更好地利用NPU,华为在软件上也下了很多功夫,新NPU支持超过300个AI算子,支持90%的开源模型,软硬件双加速,整体效率不错。实际测试显示,麒麟9905G借助强大的AI计算能力,能够实现视频动态画面人物和背景实时剥离并替换处理的工作,这在之前的产品上是难以实现的。

In order to make better use of NPU,Huawei has also worked hard on software. The new NPU supports more than 300 AI operators, supports 90% open source models, and the software and hardware are double-accelerated, and the overall efficiency is good. The actual test shows that Kirin 9905G, with its powerful AI computing power, can realize the work of real-time stripping and replacing video dynamic picture characters and background, which is difficult to achieve in previous products.

总的来说,麒麟9905G作为最早上市的5GSoC,其整体设计和取舍都比较恰当,虽然在CPU架构上没有使用最新版本,但是总体性能依旧可圈可点。尤其是集成5G基带的设计,带来了较小的芯片面积,也使得应用它的移动设备能有比较宽裕的空间布置其他硬件,值得称赞。

In general, Kirin 9905G as the earliest available 5GSoC, its overall design and trade-offs are more appropriate, although the latest version of the CPU architecture is not used, but the overall performance is still remarkable. In particular, the design of the integrated 5G base band brings a small chip area, and makes the mobile devices that apply it have a relatively generous space to arrange other hardware, which is commendable.